feat(frontend): Complete shadcn migration of skeleton and styling components

Co-authored-by: elisiariocouto <818914+elisiariocouto@users.noreply.github.com>

frontend/package-lock.json

@@ -10,6 +10,7 @@
       "dependencies": {
         "@radix-ui/react-dialog": "^1.1.15",
         "@radix-ui/react-popover": "^1.1.15",
+        "@radix-ui/react-progress": "^1.1.7",
         "@radix-ui/react-select": "^2.2.6",
         "@radix-ui/react-slot": "^1.2.3",
         "@tailwindcss/forms": "^0.5.10",
@@ -29,6 +30,7 @@
         "react-day-picker": "^9.10.0",
         "react-dom": "^19.1.1",
         "recharts": "^3.2.0",
+        "sonner": "^2.0.7",
         "tailwind-merge": "^3.3.1",
         "tailwindcss": "^3.4.17",
         "tailwindcss-animate": "^1.0.7"
@@ -1637,6 +1639,30 @@
         }
       }
     },
+    "node_modules/@radix-ui/react-progress": {
+      "version": "1.1.7",
+      "resolved": "https://registry.npmjs.org/@radix-ui/react-progress/-/react-progress-1.1.7.tgz",
+      "integrity": "sha512-vPdg/tF6YC/ynuBIJlk1mm7Le0VgW6ub6J2UWnTQ7/D23KXcPI1qy+0vBkgKgd38RCMJavBXpB83HPNFMTb0Fg==",
+      "license": "MIT",
+      "dependencies": {
+        "@radix-ui/react-context": "1.1.2",
+        "@radix-ui/react-primitive": "2.1.3"
+      },
+      "peerDependencies": {
+        "@types/react": "*",
+        "@types/react-dom": "*",
+        "react": "^16.8 || ^17.0 || ^18.0 || ^19.0 || ^19.0.0-rc",
+        "react-dom": "^16.8 || ^17.0 || ^18.0 || ^19.0 || ^19.0.0-rc"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        },
+        "@types/react-dom": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@radix-ui/react-select": {
       "version": "2.2.6",
       "resolved": "https://registry.npmjs.org/@radix-ui/react-select/-/react-select-2.2.6.tgz",
@@ -5765,6 +5791,16 @@
         "url": "https://github.com/sponsors/isaacs"
       }
     },
+    "node_modules/sonner": {
+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/sonner/-/sonner-2.0.7.tgz",
+      "integrity": "sha512-W6ZN4p58k8aDKA4XPcx2hpIQXBRAgyiWVkYhT7CvK6D3iAu7xjvVyhQHg2/iaKJZ1XVJ4r7XuwGL+WGEK37i9w==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^18.0.0 || ^19.0.0 || ^19.0.0-rc",
+        "react-dom": "^18.0.0 || ^19.0.0 || ^19.0.0-rc"
+      }
+    },
     "node_modules/source-map": {
       "version": "0.7.6",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.6.tgz",

frontend/package.json

@@ -12,6 +12,7 @@
   "dependencies": {
     "@radix-ui/react-dialog": "^1.1.15",
     "@radix-ui/react-popover": "^1.1.15",
+    "@radix-ui/react-progress": "^1.1.7",
     "@radix-ui/react-select": "^2.2.6",
     "@radix-ui/react-slot": "^1.2.3",
     "@tailwindcss/forms": "^0.5.10",
@@ -31,6 +32,7 @@
     "react-day-picker": "^9.10.0",
     "react-dom": "^19.1.1",
     "recharts": "^3.2.0",
+    "sonner": "^2.0.7",
     "tailwind-merge": "^3.3.1",
     "tailwindcss": "^3.4.17",
     "tailwindcss-animate": "^1.0.7"

frontend/src/components/AccountsOverview.tsx

@@ -37,23 +37,23 @@ const getStatusIndicator = (status: string) => {
       };
     case "pending":
       return {
-        color: "bg-yellow-500",
+        color: "bg-amber-500",
         tooltip: "Pending",
       };
     case "error":
     case "failed":
       return {
-        color: "bg-red-500",
+        color: "bg-destructive",
         tooltip: "Error",
       };
     case "inactive":
       return {
-        color: "bg-gray-500",
+        color: "bg-muted-foreground",
         tooltip: "Inactive",
       };
     default:
       return {
-        color: "bg-blue-500",
+        color: "bg-primary",
         tooltip: status,
       };
   }
@@ -201,8 +201,8 @@ export default function AccountsOverview() {
                   {uniqueBanks}
                 </p>
               </div>
-              <div className="p-3 bg-purple-100 dark:bg-purple-900/20 rounded-full">
+              <div className="p-3 bg-muted rounded-full">
-                <Building2 className="h-6 w-6 text-purple-600" />
+                <Building2 className="h-6 w-6 text-muted-foreground" />
               </div>
             </div>
           </CardContent>

frontend/src/components/ErrorBoundary.tsx

@@ -1,6 +1,9 @@
 import { Component } from "react";
 import type { ErrorInfo, ReactNode } from "react";
 import { AlertTriangle, RefreshCw } from "lucide-react";
+import { Card, CardContent } from "./ui/card";
+import { Alert, AlertDescription, AlertTitle } from "./ui/alert";
+import { Button } from "./ui/button";
 
 interface Props {
   children: ReactNode;
@@ -39,46 +42,49 @@ class ErrorBoundary extends Component<Props, State> {
       }
 
       return (
-        <div className="bg-white rounded-lg shadow p-6">
+        <Card>
+          <CardContent className="p-6">
             <div className="flex items-center justify-center text-center">
               <div>
-              <AlertTriangle className="h-12 w-12 text-red-400 mx-auto mb-4" />
+                <AlertTriangle className="h-12 w-12 text-destructive mx-auto mb-4" />
-              <h3 className="text-lg font-medium text-gray-900 mb-2">
+                <h3 className="text-lg font-medium text-foreground mb-2">
                   Something went wrong
                 </h3>
-              <p className="text-gray-600 mb-4">
+                <p className="text-muted-foreground mb-4">
                   An error occurred while rendering this component. Please try
                   refreshing or check the console for more details.
                 </p>
 
                 {this.state.error && (
-                <div className="bg-red-50 border border-red-200 rounded-md p-3 mb-4 text-left">
+                  <Alert variant="destructive" className="mb-4 text-left">
-                  <p className="text-sm font-mono text-red-800">
+                    <AlertTriangle className="h-4 w-4" />
+                    <AlertTitle>Error Details</AlertTitle>
+                    <AlertDescription className="space-y-2">
+                      <p className="text-sm font-mono">
                         <strong>Error:</strong> {this.state.error.message}
                       </p>
                       {this.state.error.stack && (
                         <details className="mt-2">
-                      <summary className="text-sm text-red-600 cursor-pointer">
+                          <summary className="text-sm cursor-pointer">
                             Stack trace
                           </summary>
-                      <pre className="text-xs text-red-700 mt-1 whitespace-pre-wrap">
+                          <pre className="text-xs mt-1 whitespace-pre-wrap">
                             {this.state.error.stack}
                           </pre>
                         </details>
                       )}
-                </div>
+                    </AlertDescription>
+                  </Alert>
                 )}
 
-              <button
+                <Button onClick={this.handleReset}>
-                onClick={this.handleReset}
-                className="inline-flex items-center px-4 py-2 bg-blue-600 text-white rounded-md hover:bg-blue-700 transition-colors"
-              >
                   <RefreshCw className="h-4 w-4 mr-2" />
                   Try Again
-              </button>
+                </Button>
-            </div>
               </div>
             </div>
+          </CardContent>
+        </Card>
       );
     }
 

frontend/src/components/FiltersSkeleton.tsx

@@ -1,29 +1,32 @@
+import { Skeleton } from "./ui/skeleton";
+import { Card, CardContent } from "./ui/card";
+
 export default function FiltersSkeleton() {
   return (
-    <div className="bg-white rounded-lg shadow animate-pulse">
+    <Card>
-      <div className="px-6 py-4 border-b border-gray-200">
+      <div className="px-6 py-4 border-b border-border">
         <div className="flex items-center justify-between">
-          <div className="h-6 bg-gray-200 rounded w-32"></div>
+          <Skeleton className="h-6 w-32" />
           <div className="flex items-center space-x-2">
-            <div className="h-8 bg-gray-200 rounded w-24"></div>
+            <Skeleton className="h-8 w-24" />
-            <div className="h-8 bg-gray-200 rounded w-20"></div>
+            <Skeleton className="h-8 w-20" />
           </div>
         </div>
       </div>
 
-      <div className="px-6 py-4 border-b border-gray-200 bg-gray-50">
+      <CardContent className="px-6 py-4 border-b border-border bg-muted/30">
         {/* Quick Date Filters Skeleton */}
         <div className="mb-6">
-          <div className="h-4 bg-gray-200 rounded w-32 mb-3"></div>
+          <Skeleton className="h-4 w-32 mb-3" />
           <div className="space-y-2">
             <div className="flex flex-wrap gap-2">
-              <div className="h-10 bg-gray-200 rounded-lg w-24"></div>
+              <Skeleton className="h-10 w-24 rounded-lg" />
-              <div className="h-10 bg-gray-200 rounded-lg w-20"></div>
+              <Skeleton className="h-10 w-20 rounded-lg" />
-              <div className="h-10 bg-gray-200 rounded-lg w-28"></div>
+              <Skeleton className="h-10 w-28 rounded-lg" />
             </div>
             <div className="flex flex-wrap gap-2">
-              <div className="h-10 bg-gray-200 rounded-lg w-24"></div>
+              <Skeleton className="h-10 w-24 rounded-lg" />
-              <div className="h-10 bg-gray-200 rounded-lg w-20"></div>
+              <Skeleton className="h-10 w-20 rounded-lg" />
             </div>
           </div>
         </div>
@@ -31,40 +34,40 @@ export default function FiltersSkeleton() {
         {/* Filter Fields Skeleton */}
         <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4">
           <div className="sm:col-span-2 lg:col-span-1">
-            <div className="h-4 bg-gray-200 rounded w-16 mb-1"></div>
+            <Skeleton className="h-4 w-16 mb-1" />
-            <div className="h-10 bg-gray-200 rounded"></div>
+            <Skeleton className="h-10 w-full" />
           </div>
           <div>
-            <div className="h-4 bg-gray-200 rounded w-16 mb-1"></div>
+            <Skeleton className="h-4 w-16 mb-1" />
-            <div className="h-10 bg-gray-200 rounded"></div>
+            <Skeleton className="h-10 w-full" />
           </div>
           <div>
-            <div className="h-4 bg-gray-200 rounded w-20 mb-1"></div>
+            <Skeleton className="h-4 w-20 mb-1" />
-            <div className="h-10 bg-gray-200 rounded"></div>
+            <Skeleton className="h-10 w-full" />
           </div>
           <div>
-            <div className="h-4 bg-gray-200 rounded w-16 mb-1"></div>
+            <Skeleton className="h-4 w-16 mb-1" />
-            <div className="h-10 bg-gray-200 rounded"></div>
+            <Skeleton className="h-10 w-full" />
           </div>
         </div>
 
         {/* Amount Range Filters Skeleton */}
         <div className="grid grid-cols-1 sm:grid-cols-2 gap-4 mt-4">
           <div>
-            <div className="h-4 bg-gray-200 rounded w-20 mb-1"></div>
+            <Skeleton className="h-4 w-20 mb-1" />
-            <div className="h-10 bg-gray-200 rounded"></div>
+            <Skeleton className="h-10 w-full" />
           </div>
           <div>
-            <div className="h-4 bg-gray-200 rounded w-20 mb-1"></div>
+            <Skeleton className="h-4 w-20 mb-1" />
-            <div className="h-10 bg-gray-200 rounded"></div>
+            <Skeleton className="h-10 w-full" />
-          </div>
           </div>
         </div>
+      </CardContent>
 
       {/* Results Summary Skeleton */}
-      <div className="px-6 py-3 bg-gray-50 border-b border-gray-200">
+      <CardContent className="px-6 py-3 bg-muted/30 border-b border-border">
-        <div className="h-4 bg-gray-200 rounded w-48"></div>
+        <Skeleton className="h-4 w-48" />
-      </div>
+      </CardContent>
-    </div>
+    </Card>
   );
 }

frontend/src/components/Header.tsx

@@ -49,15 +49,15 @@ export default function Header({ setSidebarOpen }: HeaderProps) {
           <div className="flex items-center space-x-1">
             {healthLoading ? (
               <>
-                <Activity className="h-4 w-4 text-yellow-500 animate-pulse" />
+                <Activity className="h-4 w-4 text-muted-foreground animate-pulse" />
                 <span className="text-sm text-muted-foreground">
                   Checking...
                 </span>
               </>
             ) : healthError || healthStatus?.status !== "healthy" ? (
               <>
-                <WifiOff className="h-4 w-4 text-red-500" />
+                <WifiOff className="h-4 w-4 text-destructive" />
-                <span className="text-sm text-red-500">Disconnected</span>
+                <span className="text-sm text-destructive">Disconnected</span>
               </>
             ) : (
               <>

frontend/src/components/LoadingSpinner.tsx

@@ -1,17 +1,20 @@
 import { RefreshCw } from "lucide-react";
+import { cn } from "../lib/utils";
 
 interface LoadingSpinnerProps {
   message?: string;
+  className?: string;
 }
 
 export default function LoadingSpinner({
   message = "Loading...",
+  className,
 }: LoadingSpinnerProps) {
   return (
-    <div className="flex items-center justify-center p-8">
+    <div className={cn("flex items-center justify-center p-8", className)}>
       <div className="text-center">
-        <RefreshCw className="h-8 w-8 animate-spin text-blue-600 mx-auto mb-2" />
+        <RefreshCw className="h-8 w-8 animate-spin text-primary mx-auto mb-2" />
-        <p className="text-gray-600 text-sm">{message}</p>
+        <p className="text-muted-foreground text-sm">{message}</p>
       </div>
     </div>
   );

frontend/src/components/Notifications.tsx

@@ -24,6 +24,7 @@ import { Alert, AlertDescription, AlertTitle } from "./ui/alert";
 import { Button } from "./ui/button";
 import { Input } from "./ui/input";
 import { Label } from "./ui/label";
+import { Badge } from "./ui/badge";
 import {
   Select,
   SelectContent,
@@ -233,12 +234,8 @@ export default function Notifications() {
                           {service.name}
                         </h4>
                         <div className="flex items-center space-x-2 mt-1">
-                          <span
+                          <Badge
-                            className={`inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium ${
+                            variant={service.enabled ? "default" : "destructive"}
-                              service.enabled
-                                ? "bg-green-100 text-green-800"
-                                : "bg-red-100 text-red-800"
-                            }`}
                           >
                             {service.enabled ? (
                               <CheckCircle className="h-3 w-3 mr-1" />
@@ -246,18 +243,14 @@ export default function Notifications() {
                               <AlertCircle className="h-3 w-3 mr-1" />
                             )}
                             {service.enabled ? "Enabled" : "Disabled"}
-                          </span>
+                          </Badge>
-                          <span
+                          <Badge
-                            className={`inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium ${
+                            variant={service.configured ? "secondary" : "outline"}
-                              service.configured
-                                ? "bg-blue-100 text-blue-800"
-                                : "bg-yellow-100 text-yellow-800"
-                            }`}
                           >
                             {service.configured
                               ? "Configured"
                               : "Not Configured"}
-                          </span>
+                          </Badge>
                         </div>
                       </div>
                     </div>

frontend/src/components/TransactionSkeleton.tsx

@@ -1,3 +1,6 @@
+import { Skeleton } from "./ui/skeleton";
+import { Card } from "./ui/card";
+
 interface TransactionSkeletonProps {
   rows?: number;
   view?: "table" | "mobile";
@@ -11,93 +14,89 @@ export default function TransactionSkeleton({
 
   if (view === "mobile") {
     return (
-      <div className="bg-white rounded-lg shadow divide-y divide-gray-200">
+      <Card className="divide-y divide-border">
         {skeletonRows.map((_, index) => (
-          <div key={index} className="p-4 animate-pulse">
+          <div key={index} className="p-4">
             <div className="flex items-start justify-between">
               <div className="flex-1">
                 <div className="flex items-start space-x-3">
-                  <div className="p-2 rounded-full bg-gray-200 flex-shrink-0">
+                  <Skeleton className="h-10 w-10 rounded-full flex-shrink-0" />
-                    <div className="h-4 w-4 bg-gray-300 rounded"></div>
-                  </div>
                   <div className="flex-1 min-w-0 space-y-2">
-                    <div className="h-4 bg-gray-200 rounded w-3/4"></div>
+                    <Skeleton className="h-4 w-3/4" />
                     <div className="space-y-1">
-                      <div className="h-3 bg-gray-200 rounded w-1/2"></div>
+                      <Skeleton className="h-3 w-1/2" />
-                      <div className="h-3 bg-gray-200 rounded w-2/3"></div>
+                      <Skeleton className="h-3 w-2/3" />
-                      <div className="h-3 bg-gray-200 rounded w-1/3"></div>
+                      <Skeleton className="h-3 w-1/3" />
                     </div>
                   </div>
                 </div>
               </div>
               <div className="text-right ml-3 flex-shrink-0 space-y-2">
-                <div className="h-6 bg-gray-200 rounded w-20"></div>
+                <Skeleton className="h-6 w-20" />
-                <div className="h-4 bg-gray-200 rounded w-16 ml-auto"></div>
+                <Skeleton className="h-4 w-16 ml-auto" />
-                <div className="h-6 bg-gray-200 rounded w-12 ml-auto"></div>
+                <Skeleton className="h-6 w-12 ml-auto" />
               </div>
             </div>
           </div>
         ))}
-      </div>
+      </Card>
     );
   }
 
   return (
-    <div className="bg-white rounded-lg shadow overflow-hidden">
+    <Card className="overflow-hidden">
       <div className="overflow-x-auto">
-        <table className="min-w-full divide-y divide-gray-200">
+        <table className="min-w-full divide-y divide-border">
-          <thead className="bg-gray-50">
+          <thead className="bg-muted/50">
             <tr>
               <th className="px-6 py-3 text-left">
-                <div className="h-4 bg-gray-200 rounded w-20 animate-pulse"></div>
+                <Skeleton className="h-4 w-20" />
               </th>
               <th className="px-6 py-3 text-left">
-                <div className="h-4 bg-gray-200 rounded w-16 animate-pulse"></div>
+                <Skeleton className="h-4 w-16" />
               </th>
               <th className="px-6 py-3 text-left">
-                <div className="h-4 bg-gray-200 rounded w-12 animate-pulse"></div>
+                <Skeleton className="h-4 w-12" />
               </th>
               <th className="px-6 py-3 text-left">
-                <div className="h-4 bg-gray-200 rounded w-8 animate-pulse"></div>
+                <Skeleton className="h-4 w-8" />
               </th>
             </tr>
           </thead>
-          <tbody className="bg-white divide-y divide-gray-200">
+          <tbody className="bg-card divide-y divide-border">
             {skeletonRows.map((_, index) => (
-              <tr key={index} className="animate-pulse">
+              <tr key={index}>
                 <td className="px-6 py-4">
                   <div className="flex items-start space-x-3">
-                    <div className="p-2 rounded-full bg-gray-200 flex-shrink-0">
+                    <Skeleton className="h-10 w-10 rounded-full flex-shrink-0" />
-                      <div className="h-4 w-4 bg-gray-300 rounded"></div>
-                    </div>
                     <div className="flex-1 space-y-2">
-                      <div className="h-4 bg-gray-200 rounded w-3/4"></div>
+                      <Skeleton className="h-4 w-3/4" />
                       <div className="space-y-1">
-                        <div className="h-3 bg-gray-200 rounded w-1/2"></div>
+                        <Skeleton className="h-3 w-1/2" />
-                        <div className="h-3 bg-gray-200 rounded w-2/3"></div>
+                        <Skeleton className="h-3 w-2/3" />
                       </div>
                     </div>
                   </div>
                 </td>
                 <td className="px-6 py-4">
                   <div className="text-right">
-                    <div className="h-6 bg-gray-200 rounded w-24 ml-auto mb-1"></div>
+                    <Skeleton className="h-6 w-24 ml-auto mb-1" />
                   </div>
                 </td>
                 <td className="px-6 py-4">
                   <div className="space-y-1">
-                    <div className="h-4 bg-gray-200 rounded w-20"></div>
+                    <Skeleton className="h-4 w-20" />
-                    <div className="h-3 bg-gray-200 rounded w-16"></div>
+                    <Skeleton className="h-3 w-16" />
                   </div>
                 </td>
                 <td className="px-6 py-4">
-                  <div className="h-6 bg-gray-200 rounded w-12"></div>
+                  <Skeleton className="h-6 w-12" />
                 </td>
               </tr>
             ))}
           </tbody>
         </table>
       </div>
-    </div>
+    </Card>
   );
 }

frontend/src/components/ui/progress.tsx

@@ -0,0 +1,26 @@
+import * as React from "react";
+import * as ProgressPrimitive from "@radix-ui/react-progress";
+
+import { cn } from "@/lib/utils";
+
+const Progress = React.forwardRef<
+  React.ElementRef<typeof ProgressPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof ProgressPrimitive.Root>
+>(({ className, value, ...props }, ref) => (
+  <ProgressPrimitive.Root
+    ref={ref}
+    className={cn(
+      "relative h-2 w-full overflow-hidden rounded-full bg-secondary",
+      className
+    )}
+    {...props}
+  >
+    <ProgressPrimitive.Indicator
+      className="h-full w-full flex-1 bg-primary transition-all"
+      style={{ transform: `translateX(-${100 - (value || 0)}%)` }}
+    />
+  </ProgressPrimitive.Root>
+));
+Progress.displayName = ProgressPrimitive.Root.displayName;
+
+export { Progress };

frontend/src/components/ui/sheet.tsx

@@ -0,0 +1,138 @@
+import * as React from "react";
+import * as SheetPrimitive from "@radix-ui/react-dialog";
+import { cva, type VariantProps } from "class-variance-authority";
+import { X } from "lucide-react";
+
+import { cn } from "@/lib/utils";
+
+const Sheet = SheetPrimitive.Root;
+
+const SheetTrigger = SheetPrimitive.Trigger;
+
+const SheetClose = SheetPrimitive.Close;
+
+const SheetPortal = SheetPrimitive.Portal;
+
+const SheetOverlay = React.forwardRef<
+  React.ElementRef<typeof SheetPrimitive.Overlay>,
+  React.ComponentPropsWithoutRef<typeof SheetPrimitive.Overlay>
+>(({ className, ...props }, ref) => (
+  <SheetPrimitive.Overlay
+    className={cn(
+      "fixed inset-0 z-50 bg-black/80  data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
+      className
+    )}
+    {...props}
+    ref={ref}
+  />
+));
+SheetOverlay.displayName = SheetPrimitive.Overlay.displayName;
+
+const sheetVariants = cva(
+  "fixed z-50 gap-4 bg-background p-6 shadow-lg transition ease-in-out data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:duration-300 data-[state=open]:duration-500",
+  {
+    variants: {
+      side: {
+        top: "inset-x-0 top-0 border-b data-[state=closed]:slide-out-to-top data-[state=open]:slide-in-from-top",
+        bottom:
+          "inset-x-0 bottom-0 border-t data-[state=closed]:slide-out-to-bottom data-[state=open]:slide-in-from-bottom",
+        left: "inset-y-0 left-0 h-full w-3/4 border-r data-[state=closed]:slide-out-to-left data-[state=open]:slide-in-from-left sm:max-w-sm",
+        right:
+          "inset-y-0 right-0 h-full w-3/4  border-l data-[state=closed]:slide-out-to-right data-[state=open]:slide-in-from-right sm:max-w-sm",
+      },
+    },
+    defaultVariants: {
+      side: "right",
+    },
+  }
+);
+
+interface SheetContentProps
+  extends React.ComponentPropsWithoutRef<typeof SheetPrimitive.Content>,
+    VariantProps<typeof sheetVariants> {}
+
+const SheetContent = React.forwardRef<
+  React.ElementRef<typeof SheetPrimitive.Content>,
+  SheetContentProps
+>(({ side = "right", className, children, ...props }, ref) => (
+  <SheetPortal>
+    <SheetOverlay />
+    <SheetPrimitive.Content
+      ref={ref}
+      className={cn(sheetVariants({ side }), className)}
+      {...props}
+    >
+      {children}
+      <SheetPrimitive.Close className="absolute right-4 top-4 rounded-sm opacity-70 ring-offset-background transition-opacity hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:pointer-events-none data-[state=open]:bg-secondary">
+        <X className="h-4 w-4" />
+        <span className="sr-only">Close</span>
+      </SheetPrimitive.Close>
+    </SheetPrimitive.Content>
+  </SheetPortal>
+));
+SheetContent.displayName = SheetPrimitive.Content.displayName;
+
+const SheetHeader = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn(
+      "flex flex-col space-y-2 text-center sm:text-left",
+      className
+    )}
+    {...props}
+  />
+);
+SheetHeader.displayName = "SheetHeader";
+
+const SheetFooter = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn(
+      "flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2",
+      className
+    )}
+    {...props}
+  />
+);
+SheetFooter.displayName = "SheetFooter";
+
+const SheetTitle = React.forwardRef<
+  React.ElementRef<typeof SheetPrimitive.Title>,
+  React.ComponentPropsWithoutRef<typeof SheetPrimitive.Title>
+>(({ className, ...props }, ref) => (
+  <SheetPrimitive.Title
+    ref={ref}
+    className={cn("text-lg font-semibold text-foreground", className)}
+    {...props}
+  />
+));
+SheetTitle.displayName = SheetPrimitive.Title.displayName;
+
+const SheetDescription = React.forwardRef<
+  React.ElementRef<typeof SheetPrimitive.Description>,
+  React.ComponentPropsWithoutRef<typeof SheetPrimitive.Description>
+>(({ className, ...props }, ref) => (
+  <SheetPrimitive.Description
+    ref={ref}
+    className={cn("text-sm text-muted-foreground", className)}
+    {...props}
+  />
+));
+SheetDescription.displayName = SheetPrimitive.Description.displayName;
+
+export {
+  Sheet,
+  SheetPortal,
+  SheetOverlay,
+  SheetTrigger,
+  SheetClose,
+  SheetContent,
+  SheetHeader,
+  SheetFooter,
+  SheetTitle,
+  SheetDescription,
+};

frontend/src/components/ui/skeleton.tsx

@@ -0,0 +1,14 @@
+import { cn } from "@/lib/utils";
+
+interface SkeletonProps extends React.HTMLAttributes<HTMLDivElement> {}
+
+function Skeleton({ className, ...props }: SkeletonProps) {
+  return (
+    <div
+      className={cn("animate-pulse rounded-md bg-muted", className)}
+      {...props}
+    />
+  );
+}
+
+export { Skeleton };

frontend/src/components/ui/sonner.tsx

@@ -0,0 +1,27 @@
+"use client";
+
+import { Toaster as Sonner } from "sonner";
+
+type ToasterProps = React.ComponentProps<typeof Sonner>;
+
+const Toaster = ({ ...props }: ToasterProps) => {
+  return (
+    <Sonner
+      className="toaster group"
+      toastOptions={{
+        classNames: {
+          toast:
+            "group toast group-[.toaster]:bg-background group-[.toaster]:text-foreground group-[.toaster]:border-border group-[.toaster]:shadow-lg",
+          description: "group-[.toast]:text-muted-foreground",
+          actionButton:
+            "group-[.toast]:bg-primary group-[.toast]:text-primary-foreground",
+          cancelButton:
+            "group-[.toast]:bg-muted group-[.toast]:text-muted-foreground",
+        },
+      }}
+      {...props}
+    />
+  );
+};
+
+export { Toaster };